SB2026102019 - Anolis OS update for cjose and mod_auth_openidc

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Main Vulnerability Database SB2026102019

SB2026102019 - Anolis OS update for cjose and mod_auth_openidc

Published: October 20, 2026

Security Bulletin ID SB2026102019
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Heap-based buffer overflow (CVE-ID: CVE-2026-53938)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a heap-based buffer overflow in _cjose_jwe_decrypt_ek_aes_kw() in src/jwe.c when decrypting a crafted JWE using the AES Key Wrap algorithms. A remote attacker can submit a specially crafted JWE with an oversized encrypted_key value to cause a denial of service.

Only deployments that decrypt JWEs with A128KW, A192KW, or A256KW are affected.


2) Out-of-bounds read (CVE-ID: CVE-2026-54789)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the state-cookie parser of mod_auth_openidc. A remote attacker can trigger an out-of-bounds read error and cause a denial of service condition on the system.


Remediation

Install update from vendor's website.

References